tests(smokehouse): gzip test to assert transfer and resource sizes (#…

…7286)
GoogleChrome · Mar 19, 2019 · 9901c58 · 9901c58
1 parent 3a404c1
commit 9901c58
Show file tree

Hide file tree

Showing 4 changed files with 54 additions and 0 deletions.
diff --git a/lighthouse-cli/test/fixtures/byte-efficiency/gzip.html b/lighthouse-cli/test/fixtures/byte-efficiency/gzip.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<!--
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+-->
+<html>
+<head>
+<title>Gzip</title>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
+<script src="script.js?gzip=1"></script>
+<script src="script.js"></script>
+</head>
+<body>
+</body>
+</html>
diff --git a/lighthouse-cli/test/fixtures/static-server.js b/lighthouse-cli/test/fixtures/static-server.js
@@ -9,6 +9,7 @@
 /* eslint-disable no-console */
 
 const http = require('http');
+const zlib = require('zlib');
 const path = require('path');
 const fs = require('fs');
 const parseQueryString = require('querystring').parse;
@@ -71,6 +72,7 @@ function requestHandler(request, response) {
     }
 
     let delay = 0;
+    let useGzip = false;
     if (queryString) {
       const params = new URLSearchParams(queryString);
       // set document status-code
@@ -93,12 +95,21 @@ function requestHandler(request, response) {
         }
       }
 
+      if (params.has('gzip')) {
+        useGzip = Boolean(params.get('gzip'));
+      }
+
       // redirect url to new url if present
       if (params.has('redirect')) {
         return setTimeout(sendRedirect, delay, params.get('redirect'));
       }
     }
 
+    if (useGzip) {
+      data = zlib.gzipSync(data);
+      headers['Content-Encoding'] = 'gzip';
+    }
+
     response.writeHead(statusCode, headers);
 
     // Delay the response

diff --git a/lighthouse-cli/test/smokehouse/byte-config.js b/lighthouse-cli/test/smokehouse/byte-config.js
@@ -12,6 +12,7 @@ module.exports = {
   extends: 'lighthouse:full',
   settings: {
     onlyAudits: [
+      'network-requests',
       'offscreen-images',
       'uses-webp-images',
       'uses-optimized-images',

diff --git a/lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js b/lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js
@@ -103,4 +103,29 @@ module.exports = [
       },
     },
   },
+  {
+    requestedUrl: 'http://localhost:10200/byte-efficiency/gzip.html',
+    finalUrl: 'http://localhost:10200/byte-efficiency/gzip.html',
+    audits: {
+      'network-requests': {
+        details: {
+          items: [
+            {
+              url: 'http://localhost:10200/byte-efficiency/gzip.html',
+            },
+            {
+              url: 'http://localhost:10200/byte-efficiency/script.js?gzip=1',
+              transferSize: 1136,
+              resourceSize: 52997,
+            },
+            {
+              url: 'http://localhost:10200/byte-efficiency/script.js',
+              transferSize: 53181,
+              resourceSize: 52997,
+            },
+          ],
+        },
+      },
+    },
+  },
 ];